Three times higher hatching rates of brown-marbled grouper, epinephelus fuscoguttatus under Green light than white light

Egg hatching rates vary under different environmental conditions such as temperature, salinity, and light conditions. Light conditions are important for aquatic living things, as they affect growth and development. A few studies have been done on teleost eggs regarding optimum light conditions for i...

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Main Author:	Mukai, Yukinori
Format:	Conference or Workshop Item
Language:	English English
Published:	2014
Subjects:	SH Aquaculture. Fisheries. Angling
Online Access:	http://irep.iium.edu.my/39733/ http://irep.iium.edu.my/39733/2/three_times_higher_hatching.pdf http://irep.iium.edu.my/39733/3/three_times_higher_hatching2.pdf

id	iium-39733
recordtype	eprints
spelling	iium-397332018-06-18T12:45:10Z http://irep.iium.edu.my/39733/ Three times higher hatching rates of brown-marbled grouper, epinephelus fuscoguttatus under Green light than white light Mukai, Yukinori SH Aquaculture. Fisheries. Angling Egg hatching rates vary under different environmental conditions such as temperature, salinity, and light conditions. Light conditions are important for aquatic living things, as they affect growth and development. A few studies have been done on teleost eggs regarding optimum light conditions for incubation. For example, haddock eggs show that they are not affected by light intensity. Walleye pollock requires dark condition for the egg incubation, high light intensity, while rainbow trout eggs incubation is optimum under dim light conditions. These studies show that light conditions for egg incubations are species-specific related to the characteristics of spawning grounds. Brown-marbled grouper, Epinephelus fuscoguttatus is an important species for aquaculture in Southeast Asia. However, there are only a few studies about its early developmental stage. Still we do not know what light condition is optimum for egg incubation of brown-marbled grouper. Therefore, this study was conducted to examine optimum light wavelength and intensity for the incubation of brown-marbled grouper eggs. Light emission diode (LED) lamps were used to examine egg hatching rates. Brown-marbled grouper eggs were obtained from the brood stock of the IIUM hatchery. The eggs were incubated in 40 L triplicate aquaria in dark room, using different light wavelengths of LEDs; white as a control, blue, green, yellow and red with light intensities 0.53, 2.7 and 13.3 µmoles/m²/s respectively. Results of two-way ANOVA showed that light intensities had no significant difference, while light wavelengths had significant difference (p<0.05). Results of Tukey’s post hoc test showed that green light wavelength was significantly higher than white and yellow light wavelengths (p<0.05). Green light (2.7 µmoles/m²/s) showed almost three times higher than white light (2.7 µmoles/m²/s). 2014-06-12 Conference or Workshop Item NonPeerReviewed application/pdf en http://irep.iium.edu.my/39733/2/three_times_higher_hatching.pdf application/pdf en http://irep.iium.edu.my/39733/3/three_times_higher_hatching2.pdf Mukai, Yukinori (2014) Three times higher hatching rates of brown-marbled grouper, epinephelus fuscoguttatus under Green light than white light. In: International Research, Invention and Innovation Exhibition 2014 (IRIIE2014), 11th -13th June 2014, Gombak, Kuala Lumpur. (Unpublished)
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English
topic	SH Aquaculture. Fisheries. Angling
spellingShingle	SH Aquaculture. Fisheries. Angling Mukai, Yukinori Three times higher hatching rates of brown-marbled grouper, epinephelus fuscoguttatus under Green light than white light
description	Egg hatching rates vary under different environmental conditions such as temperature, salinity, and light conditions. Light conditions are important for aquatic living things, as they affect growth and development. A few studies have been done on teleost eggs regarding optimum light conditions for incubation. For example, haddock eggs show that they are not affected by light intensity. Walleye pollock requires dark condition for the egg incubation, high light intensity, while rainbow trout eggs incubation is optimum under dim light conditions. These studies show that light conditions for egg incubations are species-specific related to the characteristics of spawning grounds. Brown-marbled grouper, Epinephelus fuscoguttatus is an important species for aquaculture in Southeast Asia. However, there are only a few studies about its early developmental stage. Still we do not know what light condition is optimum for egg incubation of brown-marbled grouper. Therefore, this study was conducted to examine optimum light wavelength and intensity for the incubation of brown-marbled grouper eggs. Light emission diode (LED) lamps were used to examine egg hatching rates. Brown-marbled grouper eggs were obtained from the brood stock of the IIUM hatchery. The eggs were incubated in 40 L triplicate aquaria in dark room, using different light wavelengths of LEDs; white as a control, blue, green, yellow and red with light intensities 0.53, 2.7 and 13.3 µmoles/m²/s respectively. Results of two-way ANOVA showed that light intensities had no significant difference, while light wavelengths had significant difference (p<0.05). Results of Tukey’s post hoc test showed that green light wavelength was significantly higher than white and yellow light wavelengths (p<0.05). Green light (2.7 µmoles/m²/s) showed almost three times higher than white light (2.7 µmoles/m²/s).
format	Conference or Workshop Item
author	Mukai, Yukinori
author_facet	Mukai, Yukinori
author_sort	Mukai, Yukinori
title	Three times higher hatching rates of brown-marbled grouper, epinephelus fuscoguttatus under Green light than white light
title_short	Three times higher hatching rates of brown-marbled grouper, epinephelus fuscoguttatus under Green light than white light
title_full	Three times higher hatching rates of brown-marbled grouper, epinephelus fuscoguttatus under Green light than white light
title_fullStr	Three times higher hatching rates of brown-marbled grouper, epinephelus fuscoguttatus under Green light than white light
title_full_unstemmed	Three times higher hatching rates of brown-marbled grouper, epinephelus fuscoguttatus under Green light than white light
title_sort	three times higher hatching rates of brown-marbled grouper, epinephelus fuscoguttatus under green light than white light
publishDate	2014
url	http://irep.iium.edu.my/39733/ http://irep.iium.edu.my/39733/2/three_times_higher_hatching.pdf http://irep.iium.edu.my/39733/3/three_times_higher_hatching2.pdf
first_indexed	2023-09-18T20:57:05Z
last_indexed	2023-09-18T20:57:05Z
_version_	1777410376512569344

Three times higher hatching rates of brown-marbled grouper, epinephelus fuscoguttatus under Green light than white light

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